[Elecraft] K2 Mikes

[Don Wilhelm]

Dom,

If you plan to do K2 work repetitively, making up a "microphone pinout" 
change box would be handy.
However, that does not fully address the problem of the bias resistor.  
In order to test properly, you would need one (or more) dynamic 
microphones like your Yaesu MH-31, plus you would need an electret type 
microphone, like the Elecraft MH2/3 or one of the Icom microphones.

I myself would be reluctant to simply change the plugging of the 
microphone configuration header and then ship a K2 to the customer 
without having the ability to test that change.

If this is a one-time build for another ham, I would ask him to send his 
Icom microphone to you.

73,
Don W3FPR

On 9/30/2014 12:11 PM, Dominic Baines wrote:
> Dummy question...
>
> I've got a K2 serial c5500 added the KSB2 module I have a Yaseu mic 
> MH-31 (No additional pre-amp fitted) will to do the SSB test and 
> alignment with it... however the K2 is going to someone who uses an 
> ICOM mike, type unknown. (Yes will need to know if need to add pin 2 
> for a pre-amp...checking)
>
> Anything that might be very different between them from those in the 
> know that would make alignment with one irrelevant for the other?
> I'm pretty sure I will have to wire differently on the unit for the 
> inital mike and the final one (bit of a pain ho hum), apart from the 
> jumpers and details listed P17/18 in the KSB2 manual. 
> http://www.elecraft.com/manual/ksb2%20manual%20rev%20G.pdf
>
> Or anyone suggest suitable tests just to make sure it is all working 
> fine? I could think a PTT and/or an up/down break out board and 
> switches might be worth doing?
>
> 72/73
> Dom
> M1KTA
>
>
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